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Philly Cheese Steak Foil Packet Dinners

Philly cheesesteak foil packet dinners make an all-in-one grilled dinner with tender steak, peppers, onions, and mushrooms sealed in heavy-duty foil. Packets steam as they cook, then you open them to melt provolone over everything.
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Prep Time 20 minutes
Cook Time 20 minutes
Total Time 40 minutes
Servings: 4 servings
Course: Main Dish
Cuisine: American
Calories: 640
Ingredients Equipment Method Notes

Ingredients
  

Sirloin steak
  • 1.5 lb sirloin steak thinly sliced
Bell peppers
  • 2 bell peppers sliced
Onion
  • 1 onion large, sliced
Mushrooms
  • 2 cup mushrooms sliced
Provolone cheese
  • 8 provolone cheese slices
Worcestershire sauce
  • 2 tbsp Worcestershire sauce
Olive oil
  • 2 tbsp olive oil
Garlic powder
  • 1 tsp garlic powder
Salt and pepper
  • 0.25 tsp salt to taste
  • 0.25 tsp pepper to taste
Heavy-duty foil
  • 4 heavy-duty foil large sheets
Hoagie rolls
  • 4 hoagie rolls optional, for serving

Equipment

  • 1 sheet pan

Method
 

Assemble the packets
  1. Divide the steak, bell peppers, onion, and mushrooms evenly among 4 heavy-duty foil sheets so each packet has a similar mix of fillings.
  2. Drizzle each packet with olive oil and Worcestershire sauce to help the steak stay juicy during grilling.
  3. Sprinkle garlic powder, salt, and pepper over each packet, then press the foil slightly so the seasonings distribute across the top.
  4. Top each packet with 2 slices provolone cheese so it will melt directly over the hot fillings.
  5. Fold the foil into sealed packets, crimping the edges tightly to keep steam inside.
Grill and serve
  1. Grill the packets over medium heat for 18-20 minutes, flipping halfway so they cook evenly on both sides.
  2. Carefully open the packets (watch the steam) and serve immediately in hoagie rolls or as-is.

Notes

For the steamiest melt, seal packets tightly and place them seam-side down on the grill or on a preheated sheet pan so juices don’t leak. Refrigerate leftovers in a covered container up to 3 days; reheat until hot. Freezing is not recommended for best texture of steak and peppers. For a lower-carb option, serve in lettuce cups instead of hoagie rolls.